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+/*************************************************************************/
+/* gd_compiler.h */
+/*************************************************************************/
+/* This file is part of: */
+/* GODOT ENGINE */
+/* http://www.godotengine.org */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
+/* */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the */
+/* "Software"), to deal in the Software without restriction, including */
+/* without limitation the rights to use, copy, modify, merge, publish, */
+/* distribute, sublicense, and/or sell copies of the Software, and to */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions: */
+/* */
+/* The above copyright notice and this permission notice shall be */
+/* included in all copies or substantial portions of the Software. */
+/* */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
+/*************************************************************************/
+#ifndef GD_COMPILER_H
+#define GD_COMPILER_H
+
+#include "gd_parser.h"
+#include "gd_script.h"
+
+
+class GDCompiler {
+
+ const GDParser *parser;
+ struct CodeGen {
+
+
+ GDScript *script;
+ const GDParser::ClassNode *class_node;
+ const GDParser::FunctionNode *function_node;
+
+
+ bool debug_stack;
+
+
+ List< Map<StringName,int> > stack_id_stack;
+ Map<StringName,int> stack_identifiers;
+
+ List<GDFunction::StackDebug> stack_debug;
+ List< Map<StringName,int> > block_identifier_stack;
+ Map<StringName,int> block_identifiers;
+
+
+ void add_stack_identifier(const StringName& p_id,int p_stackpos) {
+
+ stack_identifiers[p_id]=p_stackpos;
+ if (debug_stack) {
+
+ block_identifiers[p_id]=p_stackpos;
+ GDFunction::StackDebug sd;
+ sd.added=true;
+ sd.line=current_line;
+ sd.identifier=p_id;
+ sd.pos=p_stackpos;
+ stack_debug.push_back(sd);
+ }
+ }
+
+ void push_stack_identifiers() {
+
+ stack_id_stack.push_back( stack_identifiers );
+ if (debug_stack) {
+
+ block_identifier_stack.push_back(block_identifiers);
+ block_identifiers.clear();
+ }
+ }
+
+ void pop_stack_identifiers() {
+
+ stack_identifiers = stack_id_stack.back()->get();
+ stack_id_stack.pop_back();
+
+ if (debug_stack) {
+ for (Map<StringName,int>::Element *E=block_identifiers.front();E;E=E->next()) {
+
+ GDFunction::StackDebug sd;
+ sd.added=false;
+ sd.identifier=E->key();
+ sd.line=current_line;
+ sd.pos=E->get();
+ stack_debug.push_back(sd);
+ }
+ block_identifiers=block_identifier_stack.back()->get();
+ block_identifier_stack.pop_back();
+ }
+
+ }
+
+
+ // int get_identifier_pos(const StringName& p_dentifier) const;
+ HashMap<Variant,int,VariantHasher> constant_map;
+ Map<StringName,int> name_map;
+
+ int get_name_map_pos(const StringName& p_identifier) {
+
+ int ret;
+ if (!name_map.has(p_identifier)) {
+ ret=name_map.size();
+ name_map[p_identifier]=ret;
+ } else {
+ ret=name_map[p_identifier];
+ }
+ return ret;
+ }
+
+
+
+ int get_constant_pos(const Variant& p_constant) {
+
+
+ if (constant_map.has(p_constant))
+ return constant_map[p_constant];
+ int pos = constant_map.size();
+ constant_map[p_constant]=pos;
+ return pos;
+ }
+
+ Vector<int> opcodes;
+ void alloc_stack(int p_level) { if (p_level >= stack_max) stack_max=p_level+1; }
+ void alloc_call(int p_params) { if (p_params >= call_max) call_max=p_params; }
+
+ int current_line;
+ int stack_max;
+ int call_max;
+ };
+
+#if 0
+ void _create_index(const GDParser::OperatorNode *on);
+ void _create_call(const GDParser::OperatorNode *on);
+
+
+ int _parse_expression(const GDParser::Node *p_expr,CodeGen& codegen);
+ void _parse_block(GDParser::BlockNode *p_block);
+ void _parse_function(GDParser::FunctionNode *p_func);
+ Ref<GDScript> _parse_class(GDParser::ClassNode *p_class);
+#endif
+
+ void _set_error(const String& p_error,const GDParser::Node *p_node);
+
+ bool _create_unary_operator(CodeGen& codegen,const GDParser::OperatorNode *on,Variant::Operator op, int p_stack_level);
+ bool _create_binary_operator(CodeGen& codegen,const GDParser::OperatorNode *on,Variant::Operator op, int p_stack_level);
+
+ //int _parse_subexpression(CodeGen& codegen,const GDParser::BlockNode *p_block,const GDParser::Node *p_expression);
+ int _parse_assign_right_expression(CodeGen& codegen,const GDParser::OperatorNode *p_expression, int p_stack_level);
+ int _parse_expression(CodeGen& codegen,const GDParser::Node *p_expression, int p_stack_level,bool p_root=false);
+ Error _parse_block(CodeGen& codegen,const GDParser::BlockNode *p_block,int p_stack_level=0,int p_break_addr=-1,int p_continue_addr=-1);
+ Error _parse_function(GDScript *p_script,const GDParser::ClassNode *p_class,const GDParser::FunctionNode *p_func);
+ Error _parse_class(GDScript *p_script,GDScript *p_owner,const GDParser::ClassNode *p_class);
+ int err_line;
+ int err_column;
+ StringName source;
+ String error;
+
+public:
+
+ Error compile(const GDParser *p_parser,GDScript *p_script);
+
+ String get_error() const;
+ int get_error_line() const;
+ int get_error_column() const;
+
+ GDCompiler();
+};
+
+
+#endif // COMPILER_H